package com.athuiju.gateway.handler;

import org.springframework.beans.factory.ObjectProvider;
import org.springframework.boot.autoconfigure.web.ResourceProperties;
import org.springframework.boot.autoconfigure.web.ServerProperties;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.boot.web.reactive.error.ErrorAttributes;
import org.springframework.boot.web.reactive.error.ErrorWebExceptionHandler;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.Ordered;
import org.springframework.core.annotation.Order;
import org.springframework.http.codec.ServerCodecConfigurer;
import org.springframework.web.reactive.result.view.ViewResolver;

import java.util.Collections;
import java.util.List;

@Configuration
@EnableConfigurationProperties({ServerProperties.class, ResourceProperties.class})
public class ErrorHandlerConfig {
    private  final ServerProperties serverProperties;
    private final ApplicationContext applicationContext;
    private  final ResourceProperties resourceProperties;
    private final List<ViewResolver>viewResolvers;
    private final ServerCodecConfigurer serverCodecConfigurer;
    public ErrorHandlerConfig(ServerProperties serverProperties,
                              ResourceProperties resourceProperties,
                              ObjectProvider<List<ViewResolver>>viewResolversProvider,
                              ServerCodecConfigurer serverCodecConfigurer,
                              ApplicationContext applicationContext
                              ){
        this.serverProperties=serverProperties;
        this.applicationContext=applicationContext;
        this.resourceProperties=resourceProperties;
        this.viewResolvers=viewResolversProvider.getIfAvailable(Collections::emptyList);
        this.serverCodecConfigurer=serverCodecConfigurer;
    }
    @Bean
    @Order(Ordered.HIGHEST_PRECEDENCE)
    public ErrorWebExceptionHandler errorWebExceptionHandler(ErrorAttributes errorAttributes){
        com.athuiju.gateway.handler.JsonExceptionHandler exceptionHandler=new com.athuiju.gateway.handler.JsonExceptionHandler(
       /* com.athuiju.gateway.handler.JsonExceptionHandler=new com.athuiju.gateway.handler.JsonExceptionHandler(*/
                errorAttributes,
                this.resourceProperties,
                this.serverProperties.getError(),
                this.applicationContext);
        exceptionHandler.setViewResolvers(this.viewResolvers);
        exceptionHandler.setMessageWriters(this.serverCodecConfigurer.getWriters());
        exceptionHandler.setMessageReaders(this.serverCodecConfigurer.getReaders());
        return  exceptionHandler;
    }
}
